86 DISEASES OF THE HOG. 
SPIROPTERA STRONGYLINE—RUD. 
There are a number of small, whitish or reddish 
round worms which taper somewhat towards the 
anterior end, or towards both ends. The head is 
smallwith small papillae or naked;the malegrows 
to about half an inch long or more; the female one- 
third of an inch or more; it lives in the stomach of 
the pig, but generally does not produce any serious 
disease. The fluid extract of spigelia and senna in 
half ounce doses given every four hours until purg- 
ing ensues usually dislodges them. 
SCLEROSTOTUM DENTATUM (DIESING.) 
This is a small worm living in the intestines of 
swine. The male is about one third of an inch long; 
the female half an inch long; the body is of a dark 
color and the surface is finely marked with trans- 
verse striae. It is quite slender and tapering at 
each end, but the male has near the tail a three- 
lobed expansion. The eggs are laid in the intes- 
tines, from which they pass out into the open air 
and are soon hatched. The mouth of this worm is 
circular and armed with six teeth, by means of 
which it attaches itself to the intestines and 
pierces the tissue, feeding upon the blood. If there 
are many of them they create such a drain on the 
system of their host as to weaken and possibly de- 
stroy it. It may also by its irritation of the bow- 
els cause serious trouble and disease. An active 
purge is the best remedy for the removal of this 
worm. 
